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Power Supply

The input side of the external power supply has a standard IEC 320 C14 type input. The cord is has a standard IEC 320 C13 type plug.
You should be able to use a standard computer power supply cable from the wall outlet to the external power supply brick.

Specifications

Plug Diameter

Outer: 5.5 mm
Inner: 2.5 mm
(5.5 x 2.5 mm Connector)

Jan 2017 - Current

Volts

Freq. (Hz)

Amps

Input

100 - 240

50 / 60

2.5

Output

12

0

7.0

May 2016 - Jan 2017

Volts

Freq. (Hz)

Amps

Input

100 - 240

50 / 60

2.5

Output

12

0

10

Why is the power supply only 7.0 Amps now

The external power supply (EPS) was changed at the beginning of 2017. This was done to comply with the U.S. Department of Energy (DoE) Level VI energy efficiency requirements.

Amazon.com - Winkeyes AC 100-240V to DC 12V 10A Switching Power Supply AdapterIt was reported by a user on July 3, 2018 that this power supply is now shipping with a 5.5 x 2.1mm on all outputs.
This power supply has a 5.5mm x 2.5mm connector and includes a pigtail splitter with eight 2.1mm connectors. The splitter cable is not needed. The product description refers to the 2.1mm pigtail ends.NOTE: As of the last time I purchased on June 24, 2017 and Amazon reviews from January 2018, the power supply did ship with the appropriate size connector which is 5.5 x 2.5mm. This may not be the case any longer so I'll try to locate a suitable replacement that isn't $48.